NEETBotanyCell Cycle and Cell Division
What is the main function of kinetochores?
Options
- ATo hold the chromosomes in place during mitosis
- BTo move the chromosomes into position at the center of the cell
- CTo serve as the site of attachment of spindle fibres
- DTo aid in the condensation of chromosomal material
Correct answer
C. To serve as the site of attachment of spindle fibres
Step-by-step solution
By this stage, condensation of chromosomes is completed and they can be observed clearly under the microscope. This then, is the stage at which morphology of chromosomes is most easily studied. At this stage, metaphase chromosome is made up of two sister chromatids, which are held together by the centromere. Small disc-shaped structures at the surface of the centromeres are called kinetochores. These structures serve as the sites of attachment of spindle fibres (formed by the spindle fibres) to the chromosomes that